"It's taken longer than expected but it has finally happened: unsigned desktop applications run on Windows RT. Ironically, a vulnerability in the Windows kernel that has existed for some time and got ported to ARM just like the rest of Windows made this possible. MSFT's artificial incompatibility does not work because Windows RT is not in any way reduced in functionality. It's a clean port, and a good one. But deep in the kernel, in a hashed and signed data section protected by UEFI's Secure Boot, lies a byte that represents the minimum signing level." Good stuff. Very good stuff.

No, the hacked warez would be x86 code. To work on the tablet, it would need to be recompiled for ARM, which requires the source-code to feed into the compiler. I suppose there may be some closed source stuff that people have stolen the sourcecode for, but I doubt that would be much of a large-scale issue.